diff --git a/src/freedombone-app-radicale b/src/freedombone-app-radicale
index 25d04edd..67fc6c8d 100755
--- a/src/freedombone-app-radicale
+++ b/src/freedombone-app-radicale
@@ -513,7 +513,7 @@ function install_radicale {
         set_completion_param "radicale onion domain" "${RADICALE_ONION_HOSTNAME}"
     else
         # alter the existing site config
-        if ! grep "radicale" /etc/nginx/sites-available/${DEFAULT_DOMAIN_NAME}; then
+        if ! grep "# Start radicale" /etc/nginx/sites-available/${DEFAULT_DOMAIN_NAME}; then
             sed -i '/ 443/a    # Start radicale\n  location @radicale {\n    auth_basic "Radicale";\n    auth_basic_user_file /var/www/radicale/users;\n    proxy_pass http://localhost:52322;\n    proxy_buffering off;\n    proxy_set_header Host $host;\n    proxy_set_header X-Real-IP $remote_addr;\n    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n    proxy_set_header X-Forwarded-Proto $scheme;\n  }\n\n  location /radicale {\n      try_files $uri @radicale;\n  }\n\n  location /.well-known/carddav {\n      try_files $uri @radicale;\n  }\n\n  location /.well-known/caldav {\n      try_files $uri @radicale;\n  }\n    # End radicale' /etc/nginx/sites-available/${DEFAULT_DOMAIN_NAME}
             sed -i '/listen localhost/a    # Start radicale\n  location @radicale {\n    auth_basic "Radicale";\n    auth_basic_user_file /var/www/radicale/users;\n    proxy_pass http://localhost:52322;\n    proxy_buffering off;\n    proxy_set_header Host $host;\n    proxy_set_header X-Real-IP $remote_addr;\n    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n    proxy_set_header X-Forwarded-Proto $scheme;\n  }\n\n  location /radicale {\n      try_files $uri @radicale;\n  }\n\n  location /.well-known/carddav {\n      try_files $uri @radicale;\n  }\n\n  location /.well-known/caldav {\n      try_files $uri @radicale;\n  }\n    # End radicale' /etc/nginx/sites-available/${DEFAULT_DOMAIN_NAME}
         fi